5.0 Intercooler ?
 

I have a 1990 5.0 running a powerdyne supercharger. It runs a little hot and I wanted to bolt up an intercooler up to it. What would work with the powerdyne supercharger?

If you're talking about cooling the charged air, any of them will work. Vortech makes the air/water cooler, I personally liked ATI's horizontal air/air layout with an aluminium scoop under the nose, ebay even has generic ones that would work with a little fab work. With the popularity of turbos picking up, the options are endless for coolers.